diff --git a/.gitignore b/.gitignore
index a02eac6..5221139 100644
--- a/.gitignore
+++ b/.gitignore
@@ -46,3 +46,7 @@ src/EverythingToJpeg.Shell/Everythi*/
 
 # .NET artifacts dir from BuildMsix.ps1
 artifacts/
+
+# NuGet packages restore + nuget.exe cache
+packages/
+tools/
diff --git a/packaging/BuildMsix.ps1 b/packaging/BuildMsix.ps1
index 86087dd..14dd699 100644
--- a/packaging/BuildMsix.ps1
+++ b/packaging/BuildMsix.ps1
@@ -75,8 +75,25 @@ if ($LASTEXITCODE -ne 0) { throw 'dotnet publish 실패' }
 # ---- 2) C++ Shell DLL ----
 Write-Host ''
 Write-Host '[2/5] C++ Shell DLL 빌드'
-& $msbuild $shellProj /t:Restore /p:RestorePackagesConfig=true /p:Configuration=$Configuration /p:Platform=$Platform /v:minimal | Out-Host
-if ($LASTEXITCODE -ne 0) { throw 'Shell restore 실패' }
+
+# nuget.exe 자동 다운로드 (없으면)
+$nuget = Get-Command nuget.exe -ErrorAction SilentlyContinue
+if (-not $nuget) {
+    $nugetExe = Join-Path $repoRoot 'tools\nuget.exe'
+    if (-not (Test-Path $nugetExe)) {
+        New-Item -ItemType Directory -Path (Split-Path $nugetExe) -Force | Out-Null
+        Write-Host '  nuget.exe 다운로드 중…'
+        Invoke-WebRequest -Uri 'https://dist.nuget.org/win-x86-commandline/latest/nuget.exe' -OutFile $nugetExe
+    }
+    $nugetCmd = $nugetExe
+} else {
+    $nugetCmd = $nuget.Source
+}
+
+$packagesDir = Join-Path $repoRoot 'packages'
+& $nugetCmd restore (Join-Path $repoRoot 'src\EverythingToJpeg.Shell\packages.config') -PackagesDirectory $packagesDir | Out-Host
+if ($LASTEXITCODE -ne 0) { throw 'NuGet restore 실패' }
+
 & $msbuild $shellProj /p:Configuration=$Configuration /p:Platform=$Platform /m /v:minimal | Out-Host
 if ($LASTEXITCODE -ne 0) { throw 'Shell build 실패' }
 $shellDll = Join-Path $repoRoot ("src\EverythingToJpeg.Shell\$Platform\$Configuration\EverythingToJpeg.Shell.dll")
diff --git a/src/EverythingToJpeg.Shell/EverythingToJpeg.Shell.vcxproj b/src/EverythingToJpeg.Shell/EverythingToJpeg.Shell.vcxproj
index f8ec53e..a2fa155 100644
--- a/src/EverythingToJpeg.Shell/EverythingToJpeg.Shell.vcxproj
+++ b/src/EverythingToJpeg.Shell/EverythingToJpeg.Shell.vcxproj
@@ -99,12 +99,22 @@
   </ItemGroup>
 
   <ItemGroup>
+    <None Include="packages.config" />
     <None Include="Source.def" />
   </ItemGroup>
 
-  <ItemGroup>
-    <PackageReference Include="Microsoft.Windows.ImplementationLibrary" Version="1.0.260126.7" />
-  </ItemGroup>
-
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+
+  <ImportGroup Label="ExtensionTargets">
+    <Import Project="..\..\packages\Microsoft.Windows.ImplementationLibrary.1.0.260126.7\build\native\Microsoft.Windows.ImplementationLibrary.targets"
+            Condition="Exists('..\..\packages\Microsoft.Windows.ImplementationLibrary.1.0.260126.7\build\native\Microsoft.Windows.ImplementationLibrary.targets')" />
+  </ImportGroup>
+
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>WIL NuGet 패키지가 복원되지 않았습니다. nuget restore를 먼저 실행하세요.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\..\packages\Microsoft.Windows.ImplementationLibrary.1.0.260126.7\build\native\Microsoft.Windows.ImplementationLibrary.targets')"
+           Text="$(ErrorText)" />
+  </Target>
 </Project>
diff --git a/src/EverythingToJpeg.Shell/packages.config b/src/EverythingToJpeg.Shell/packages.config
new file mode 100644
index 0000000..33d04fe
--- /dev/null
+++ b/src/EverythingToJpeg.Shell/packages.config
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="Microsoft.Windows.ImplementationLibrary" version="1.0.260126.7" targetFramework="native" />
+</packages>